[Code of Federal Regulations] [Title 41, Volume 4] [Revised as of July 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 41CFR301-10.164] [Page 34] TITLE 41--PUBLIC CONTRACTS AND PROPERTY MANAGEMENT CHAPTER 301--TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES PART 301-10_TRANSPORTATION EXPENSES--Table of Contents Subpart B_Common Carrier Transportation Sec. 301-10.164 When may I use extra-fare train service? You may use extra fare train service whenever your agency determines it is more advantageous to the Government or is required for security reasons. The use of the lowest class of service available on any AMTRAK Acela or Metroliner train service (including Acela Express) is deemed advantageous to the Government and no further agency approval is needed. On the Amtrak Acela Express or Metroliner train service, the lowest available class is business and on the Amtrak Regional train service the lowest available class of service is coach. AMTRAK Acela and Metroliner first-class accommodations may be authorized/approved only as provided in Sec. 301-10.162. [FTR Amdt. 108, 67 FR 57965, Sept. 13, 2002] Ship